project-base/server-skynet-source-3rd-jemalloc
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Use posix_madvise to purge pages when available

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Jin Qian 2020-10-30 14:09:05 -07:00 committed by David Goldblatt
parent 26c1dc5a3a
commit 4e3fe218e9
1 changed files with 6 additions and 0 deletions
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6
src/pages.c
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@ -332,6 +332,9 @@ pages_purge_lazy(void *addr, size_t size) {
#elif defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \ #elif defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
!defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS) !defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
return (madvise(addr, size, MADV_DONTNEED) != 0); return (madvise(addr, size, MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
!defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
return (posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
#else #else
not_reached(); not_reached();
#endif #endif
@ -349,6 +352,9 @@ pages_purge_forced(void *addr, size_t size) {
#if defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \ #if defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS) defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
return (madvise(addr, size, MADV_DONTNEED) != 0); return (madvise(addr, size, MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
return (posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
#elif defined(JEMALLOC_MAPS_COALESCE) #elif defined(JEMALLOC_MAPS_COALESCE)
/* Try to overlay a new demand-zeroed mapping. */ /* Try to overlay a new demand-zeroed mapping. */
return pages_commit(addr, size); return pages_commit(addr, size);